title: 2-Amino-4-methyl-pyridinium 2-nitro-benzoate.
abstract: In the title mol-ecular salt, C6H9N2 (+)·C7H4NO4 (-), the original pyridine N atom of 2-amino-4-methyl-pyridine is protonated and the carb-oxylic acid group of nitro-benzoic acid is deprotonated. In the crystal, the ions are linked by N-H⋯O hydrogen bonds, forming chains propagating along [001]. The chains are linked via C-H⋯O hydrogen bonds, forming two-dimensional networks lying parallel to the bc plane.
authors.affiliation: Department of Physics, Anna University, Chennai 600 025, India.
authors.forename: Srinivasan
authors.initials: S
authors.lastname: Muralidharan
authors.forename: Narayanan
authors.initials: N
authors.lastname: Elavarasu
authors.forename: Thothadri
authors.initials: T
authors.lastname: Srinivasan
authors.forename: Rengasamy
authors.initials: R
authors.lastname: Gopalakrishnan
authors.forename: Devadasan
authors.initials: D
authors.lastname: Velmurugan